/**
 * Layout Styles
 * 布局样式 - 页面结构和容器
 */

/* ============================================
   TOP NAVIGATION - 顶部导航栏 (Vincent style)
   ============================================ */

.top-nav {
  width: 100%;
  background-color: var(--color-bg-primary);
}

.top-nav-container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0.8rem var(--container-padding);
  padding-bottom: 1rem;  /* Vincent's padding-bottom */
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: relative;
}

/* 分隔线 - 可调节长度 */
.top-nav-container::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: var(--container-padding);
  width: calc(100% - var(--container-padding) * 2);  /* 手动调节：改变这个值来调节分隔线长度，如 80%, 600px 等 */
  height: 1px;
  background-color: var(--color-border-light);
}

.top-nav-identity {
  flex: 1;
}

.top-nav-name {
  font-size: 2rem;  /* Vincent: 2rem = 32px */
  font-weight: 700;  /* Vincent: 700 */
  color: var(--color-text-heading);
  margin: 0;
  margin-bottom: 0.25rem;  /* Vincent's margin-bottom */
  line-height: 1.2;
}

.top-nav-title,
.subtitle {
  font-size: 1rem;  /* Vincent: 1rem = 16px */
  color: var(--color-text-muted);  /* Vincent: --color-muted */
  margin: 0;
  font-weight: var(--font-weight-normal);
}

.top-nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.top-nav-links a {
  font-size: 1rem;
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-base);
  font-weight: var(--font-weight-normal);
}

.top-nav-links a:hover {
  color: var(--color-link-default);
  text-decoration: none;
}


/* ============================================
   MAIN CONTAINER - 主容器
   ============================================ */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--container-padding);
  width: 100%;
}


/* ============================================
   PAGE STRUCTURE - 页面结构
   ============================================ */

main {
  padding-top: 1.5rem;
  padding-bottom: 2.5rem;
}


/* ============================================
   SECTIONS - 区块 (Vincent style spacing)
   ============================================ */

section {
  margin-bottom: 0.85rem;  /* tighter spacing between sections */
}

section:last-child {
  margin-bottom: 0;
}

/* Section 标题 (Vincent style: simple bold text) */
.section-heading {
  font-size: 1.5rem;  /* Vincent: 1.5rem = 24px */
  font-weight: 600;  /* Vincent: 700, not 800 */
  color: var(--color-text-heading);
  margin-top: 1.5rem;  /* Compact: reduced from 1.5rem */
  margin-bottom: 0.5rem;
  padding-bottom: 0.25rem;
  border-bottom: 2px solid var(--color-text-heading);
  display: inline-block;
}


/* ============================================
   HERO SECTION - 头部区块 (Vincent style)
   ============================================ */

.hero {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 3rem;  /* Vincent's gap */
  margin-bottom: 0.6rem;  /* tighter spacing before next section */
  padding: 1rem 0;  /* reduce vertical padding to shrink gap */
}

.hero-text {
  flex: 1;
  max-width: 65%;  /* Vincent's max-width for text */
  margin-top: 2rem;  /* 手动调节：增加这个值让文字更靠下 */
}

.hero-avatar {
  flex-shrink: 0;  /* Vincent's flex-shrink */
  margin-top: 2.5rem;  /* 手动调节：增加这个值让头像更靠下 */
}

.hero-avatar img {
  width: 200px;   /* Vincent's avatar size */
  height: 200px;
  border-radius: var(--radius-full);
  object-fit: cover;
}

/* Contact links (Vincent style: button-style badges) */
.hero-links {
  display: flex;
  flex-wrap: wrap;
  align-items: center;  /* 垂直居中对齐所有按钮 */
  gap: 0.5rem;  /* Vincent's gap */
  margin-top: 0.00rem;  /* tighten gap to text */
  font-size: 1.00rem;  /* Vincent's font-size: 14px */
  list-style: none;
  padding: 0;
  margin-bottom: 0;
}

.hero-links li {
  display: flex;
  align-items: center;  /* 确保内容垂直居中 */
  border-radius: 6px;  /* Vincent's border-radius */
  border: 1px solid var(--color-border-light);
  background-color: var(--color-bg-secondary);
  transition: all 0.25s ease-out;
  margin: 0;
}

.hero-links li:hover {
  background-color: var(--color-bg-primary);
  border-color: var(--color-link-default);
}

.hero-links a {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;  /* 文字和图标之间的间距 */
  padding: 0.5em 0.875em;  /* Vincent's padding */
  color: var(--color-text-primary);
  text-decoration: none;
  width: 100%;
}

.hero-links a:hover {
  color: var(--color-text-primary);
  text-decoration: none;
}

.hero-links svg {
  width: 1em;
  height: 1em;
  flex-shrink: 0;
}

.hero-bio {
  font-size: 1.05rem;  /* Vincent's intro-quote font-size */
  line-height: 1.45;   /* Vincent's line-height */
  color: var(--color-text-primary);
  margin-bottom: 0.75rem;  /* Vincent's margin-bottom */
}

.hero-bio .greeting {
  font-size: 1.75rem;  /* Vincent's greeting font-size */
  font-weight: 700;
  margin-top: 0;       /* 手动调节：标题上方间距 */
  margin-bottom: 0.75rem;  /* 手动调节：标题下方间距 */
  border-bottom: none;  /* 移除默认的下划线 */
  display: block;
}

/* ============================================
   FOOTER
   ============================================ */

.site-footer {
  text-align: center;
  padding: 1rem 0;
  margin-top: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
  border-top: 1px solid var(--color-border-light);
}

.site-footer a {
  color: var(--color-link-default);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}


/* ============================================
   RESPONSIVE - 移动端布局
   ============================================ */

@media (max-width: 768px) {
  main {
    padding-top: 1.5rem;
    padding-bottom: 3rem;
  }

  /* Top navigation mobile */
  .top-nav-container {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
    padding: 1rem var(--container-padding-mobile);
  }

  .top-nav-links {
    gap: 1.25rem;
    font-size: 0.9375rem;
  }

  /* Hero 区块纵向排列 (Vincent style) */
  .hero {
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;  /* Vincent's mobile gap */
  }

  .hero-text {
    max-width: 100%;
    text-align: center;  /* Center on mobile */
  }

  .hero-avatar img {
    width: 150px;   /* Vincent's mobile avatar size */
    height: 150px;
  }

  .hero-links {
    justify-content: center;
  }

  .hero-bio {
    text-align: left; /* 正文还是左对齐,更易读 */
  }
}